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一、下載安裝python 1. 下載python 
2. python安裝   
4.驗(yàn)證python和pip 1 2 3 4 | C:\Users>python
Python 3.9.0 (tags/v3.9.0:9cf6752, Oct 5 2020, 15:34:40) [MSC v.1927 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>>exit()
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1 2 3 4 5 | C:\Users>pip list
Package Version
---------- -------
pip 20.2.3
setuptools 49.2.1
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二、安裝虛擬環(huán)境 下載并安裝虛擬環(huán)境
1 | C:\Users>pip install virtualenv
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2. 下載virtualenvwrapper管理環(huán)境 1 | C:\Users***>pip install virtualenvwrapper-win
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3. 虛擬環(huán)境的使用創(chuàng)建虛擬環(huán)境 mkvirtualenv 名稱 激活或切換虛擬環(huán)境 workon my_env 退出虛擬環(huán)境 deactivate 刪除虛擬環(huán)境 rmvirtualenv 名稱 查看系統(tǒng)所有的虛擬環(huán)境 lsvirtualenv
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